Parts List/Tune Up Info

2 General description

2.1 Characteristics of the transmit burst

The power levels and the shape of a transmit burst are controlled by the power amplifier

controller integrated in the main chip,The burst is generated by a 10-bit DAC from the

main chip as shown below:

The ramping shape is referenced with the rising edge of Tx-ON (from the Baseband).

There are two types of parameters define the transmit burst: the first one define the

shapes of the burst, and the second one define the temporal position of the burst.

The rising and the falling edge of the transmit burst are determined by a set of 32 DAC

code values n = 0 … 31.

Tru = TxTRUDefault + △TRU_P + △TRU_T

Trd = TxTRD_NBDefault + △TRD_P (for a normal burst).

Trd = TxTRD_ABDefault + △TRD_P (for an access burst).